[VMware] Love your Mac even more with the ability to simultaneously run any PC OS—Windows, Linux, NetWare and others—on Mac OS X. Switch between operating systems by easily  tabbing between applications and share data between the two operating systems by dragging and dropping files on the fly—all without needing to reboot. What’s more, you can create virtual machines and run them on other VMware products or run any VMware virtual machine on your Mac.

Looks like Parallels (which I use everyday) is going to have some competition. While Parallels has been running really well, if VMware comes out with support for ACPI before them (which would allow Vista to run under VM) then I’ll probably make the switch.

Sign up to get more information on the beta of VMware for OS X here.